Math Calculators
Percentages, fractions, statistics and algebra, with step-by-step working.
- Area CalculatorFind the area of common flat shapes.
- Circle CalculatorEnter one measurement of a circle and get the rest.
- Confidence Interval CalculatorFind the range that likely contains the true mean of a population.
- Distance CalculatorCalculate the straight-line distance between two points.
- Exponent and Root CalculatorCalculate powers and roots, such as 2^10 or the cube root of 27.
- Factor CalculatorList all the factors of a number or write it as a product of primes.
- Fraction CalculatorAdd, subtract, multiply or divide two fractions and see every step.
- GCF and LCM CalculatorFind the GCF and LCM of a list of numbers, with the prime factors shown.
- Half-Life CalculatorFind the remaining amount after decay, or the half-life itself.
- Log CalculatorFind logarithms to any base, including ln, log10 and log2.
- Mean, Median, Mode and Range CalculatorPaste a list of numbers and get the average, median, mode and range.
- Percent Error CalculatorMeasure how far an experimental value is from the true value.
- Percentage CalculatorFour everyday percentage calculations in one place, with the working shown.
- Permutation and Combination CalculatorWork out nPr and nCr: how many ways to arrange or choose items.
- Pythagorean Theorem CalculatorSolve a right triangle with a² + b² = c².
- Quadratic Formula CalculatorSolve any quadratic equation and see the discriminant, roots and vertex.
- Ratio CalculatorFind the missing number in a ratio or proportion.
- Sample Size CalculatorWork out how many responses you need for a reliable survey result.
- Scientific CalculatorA full scientific calculator for your browser. Type or tap, and see recent calculations.
- Scientific Notation CalculatorConvert big and small numbers to and from scientific notation.
- Slope CalculatorGet the slope, distance, midpoint and equation of the line through two points.
- Standard Deviation CalculatorMeasure how spread out your numbers are, for a sample or a whole population.
- Volume CalculatorFind the volume and surface area of common 3D shapes.
- Z-Score CalculatorFind how many standard deviations a value is from the mean, and its percentile.